What is the area of an equilateral triangle with apothem 3

use formula of equilateral triangle = roots 3/4 a square.

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4